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Rocker Arm Pin Tool

LOUD MOUSE
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Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Tue Sep 20, 2011 10:30 am

Well any long rod will work and I think that said ya had to get a slider tool and I just use a tool which I have 3 of. Long steel punch.
And if a feller had an extra clutch release rod or a long narrow piece of wood or any other item which can contact the shaft end and horrors have a hammer I'd say again I'll be finished when ya are just started.
I'm a practical mechanic and find that although I have many of the HONDA engine tools I'm able to do just as good work but far simpler/easier than a purest.
Just how I do my engine rebuilds.
4 in 5 weeks. .........lm


OldStan wrote:
While others are pulling one I will have all 4 out. .........lm
Valid point, but not every home mechanic will have the right long punch (or a slide hammer for that matter.) It's always good to have workable options.

OldStan
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Location: Galt, California

Post by OldStan » Tue Sep 20, 2011 11:41 am

I bow to your experience lm. I actually have several slide hammers, that's why I went that route. I probably would have used a punch if I'd known I would do no damage. Trust me, I'm no purist when it comes to tool. I've got drawers full of tools I've made over the years that made my job easier/faster. You're the expert here, my professional experience is on much larger engines and equipment.
63 CA78

LOUD MOUSE
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Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Tue Sep 20, 2011 12:27 pm

If ya do a valve job/remove the valves in the future ya may want to give it a try as it's so easy/quick/safe.
BTW the pins with the Big Ends have a larger oil hole (intake) than the pins with the small end. (exhaust) .........lm

OldStan wrote:I bow to your experience lm. I actually have several slide hammers, that's why I went that route. I probably would have used a punch if I'd known I would do no damage. Trust me, I'm no purist when it comes to tool. I've got drawers full of tools I've made over the years that made my job easier/faster. You're the expert here, my professional experience is on much larger engines and equipment.

Dr. Frankenstein
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Location: Charlottesville, VA

Post by Dr. Frankenstein » Wed Sep 21, 2011 6:55 am

I do have a set of long punches; I just wanted to be sure...

Okay, so you can just tap them out...but what about going back IN? Align the holes and tap them into their seats?

The slot is used to align the parts at 90 degrees to what? The valve lifters? I know I need to go back and read the manual, but practical experience is worth it's weight in gold..

Long story short, I just want to make sure I put it back together again right. I do have a manual I'm using, an original reprint for the C77 model and it cross-references the CA77 but doesn't say anything specific about the CA77, and since this is my first RE-build, I want to make sure I do it right.

Any tips on how to reinstall the pins, valve springs and keepers? I was going to use a C-clamp since I don't have a proper valve compressor, and that's about all a C-clamp is anyway...will this work?

LM: 4 engines in 5 weeks?! I wish I had that confidence! :)

Thanks;

John

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G-Man
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Post by G-Man » Wed Sep 21, 2011 7:36 am

John

I am sure that LM is an ace with his long punches but if you are a first timer I would be very careful. Judging by one of the motors I am working on it is very easy for the punch to slip and damage the bore that the pin fits in.

I bought a couple of expensive reamers to tidy up that mess....

Anybody working at the Honda factory in the 1960s would be expected to assemble one of these motors from fresh parts in less than 30minutes I would guess! :-)

When you get the pins out you will see that there are cutaways which line up with the cylinder holding studs. If you don't line those slots up the head won't go back on. Just note the alignment before you dismantle.

G
Last edited by G-Man on Wed Sep 21, 2011 10:41 am, edited 1 time in total.
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
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LOUD MOUSE
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Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Wed Sep 21, 2011 8:41 am

Punch the pin out far enough to get the stud slot out enough to be able to use the punch or screw driver and pry/pop the pin out.
When ya get one out ya will see the function/purpose of the design.
Remember the pins with the larger end/oil hole are for the intake and the others are for the exhaust.
Not ta worry if ya ding the head near the pin hole as when ya install the pin "It Will Fit And Not Be Damaged Or Have Any Problems".
Caution when ya drive them back in as they "Do Need To Be Aligned Perfectly" when ya drive them in.........lm
Dr. Frankenstein wrote:I do have a set of long punches; I just wanted to be sure...

Okay, so you can just tap them out...but what about going back IN? Align the holes and tap them into their seats?

The slot is used to align the parts at 90 degrees to what? The valve lifters? I know I need to go back and read the manual, but practical experience is worth it's weight in gold..

Long story short, I just want to make sure I put it back together again right. I do have a manual I'm using, an original reprint for the C77 model and it cross-references the CA77 but doesn't say anything specific about the CA77, and since this is my first RE-build, I want to make sure I do it right.

Any tips on how to reinstall the pins, valve springs and keepers? I was going to use a C-clamp since I don't have a proper valve compressor, and that's about all a C-clamp is anyway...will this work?

LM: 4 engines in 5 weeks?! I wish I had that confidence! :)

Thanks;

John

rrietman
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Posts: 561
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Location: bellingham wa.

Post by rrietman » Wed Sep 21, 2011 10:24 pm

Puller,Rocker arm crank pin. Honda part #07013-25002. interestingly, this tool is pretty much useless as you can't fit it in where it needs to go with the cam sprocket in place. I am no expert but the way I have always taken apart these heads, it seems like you want to get the rockers/pins out first. I just use a punch to drive em out.
Randy
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